Role of whole-body 18F-FDG PET/CT in screening for metastases in newly diagnosed sinonasal malignancies

Kerem Ozturk, Mehmet Gencturk, Matthew Rischall, Emiro Caicedo-Granados, Faqian Li, Zuzan Cayci

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVE. The aim of this study is to assess the utility of pretreatment whole-body 18F-FDG PET/CT in screening for distant metastasis (DM) and regional lymphatic metastasis (LM). MATERIALS AND METHODS. Eighty-nine consecutive patients with untreated sinonasal malignant lesions (32 women and 57 men; mean age, 62 years) underwent whole-body FDG PET/CT between January 2009 and August 2017. A retrospective analysis was performed to determine the presence of DM and LM. Any suspected metastases were confirmed by histopathologic analysis or clinical and imaging follow-up in the subsequent 12 months. The statistics were verified by comparing FDG PET/CT results with a reference standard. RESULTS. Overall, the frequency of DM was 24% (21/89), of which 81% (17/21) were identified by whole-body FDG PET/CT. The sensitivity and specificity of FDG PET/CT in predicting DM were 81% (95% CI, 62-95%) and 99% (95% CI, 82-100%), respectively. The most common DM sites were the lungs (n = 6; 28%) and bones (n = 5; 24%), followed by the liver (n = 2; 10%), brain (n = 1; 5%), and spinal canal (n = 1; 5%), with six patients (28%) having DMs at multiple sites. Overall, the frequency of LM according to the reference standard was 20%, of which 83% (15/18) were confirmed with FDG PET/CT. The sensitivity and specificity of FDG PET/CT in detecting LM were 83% (95% CI, 68-97%) and 96% (95% CI, 77- 100%), respectively. CONCLUSION. Our study showed that whole-body FDG PET/CT can be used as a screening tool for the detection of DM and LM in sinonasal neoplasms and could be performed as part of the routine pretreatment evaluation of metastatic workup.

Original languageEnglish (US)
Pages (from-to)1327-1334
Number of pages8
JournalAmerican Journal of Roentgenology
Volume212
Issue number6
DOIs
StatePublished - Jun 2019

Keywords

  • CT
  • Distant metastasis
  • Lymph node metastasis
  • PET
  • Sinonasal malignancies

PubMed: MeSH publication types

  • Journal Article

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